Ip Modem 01 : 192.168.1.1 interface=speedy1
IP Modem 02 : 192.168.2.1 interface=speedy2
IP Local : 10.18.92.1 interface=Local

Setting Buat Mangle

/ip firewall mangle 
add chain=prerouting action=mark-connection new-connection-mark=Santaria1 \
passthrough=yes connection-state=new in-interface=Local nth=2,1 \
comment="" disabled=no 
add chain=prerouting action=mark-routing new-routing-mark=Santaria1 passthrough=no \
in-interface=HotSpot connection-mark=Santaria1 comment="" disabled=no 
add chain=prerouting action=mark-connection new-connection-mark=Santaria2 \
passthrough=yes connection-state=new in-interface=Local nth=1,1 \
comment="" disabled=no 
add chain=prerouting action=mark-routing new-routing-mark=Santaria2 passthrough=no \
in-interface=HotSpot connection-mark=Santaria2 comment="" disabled=no 

Setting NAT

/ip firewall nat 
add chain=srcnat action=masquerade out-interface=speedy1
add chain=srcnat action=masquerade out-interface=speedy2
add chain=srcnat action=masquerade src-address="10.18.92.0/24"

Setting Routenya

/ ip route
add dst-address=0.0.0.0/0 gateway=192.168.1.1 scope=255 target-scope=10 \
routing-mark=Santaria1 comment="" disabled=no
add dst-address=0.0.0.0/0 gateway=192.168.2.1 scope=255 target-scope=10 \
routing-mark=Santaria2 comment="" disabled=no
add dst-address=0.0.0.0/0 gateway=192.168.1.1 scope=255 target-scope=10 \
comment="primary connection" disabled=no